Please know that the wireless LAN controllers were developed by Airespace and prior to their acquisition by Cisco in 2005, they had already created their own SNMP MIBs (the OIDs start .126.96.36.199.4.1.14179). Since the acquisition, several former Airespace objects have been obsoleted and replaced by CISCO-LWAPP-* or other Cisco objects, yet some former Airespace objects remain in use, depending on the software train in use on the wireless LAN controller. There are wireless MIBs for each software train in the Software Center.
All the maintenance releases (i.e. 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168, etc.) within a given train (i.e. 7.0.something.something, 6.0.something.something, 5.2.something.something) should have the same objects since maintenance releases are only supposed to contain bug fixes, while trains introduce new features and/or functionality--which, in turn, would require new SNMP objects.